Improvement in strap-bolts for wagon-beds



UNITED STATES PATENT FFICE.

VILLIAM J. LEWIS AND HENRY W. OLIVER, JR., OF PITTSBURG, PA.

IMPROVEMENT IN STRAP-BOLTS FOR WAGON-BEDS.

Specification forming part of Letters Patent No. 108,493, dated October18, 1870.

To all whom it may concern:

Be it known that we, WILLIAM J. LEwIs and HENRY W. OLIVER, Jr., ofPittsburg, in

Vthe county of Allegheny and State of Pennsylvania, have invented a newand useful Improvement in Strap-Bolts for W agon-Beds, Sto.; and we dohereby declare that the following is a full and exact descriptionthereof, reference being had to the accompanying drawings, and to theletters and figures of reference marked thereon.

The nature of our invention consists in a new article ofmanufacture-viz., a strap-bolt conssting of a round part provided withscrewthread and a screw-nut, a iiat part neXt to said round part, then asemi-oval part, the whole being formed of round iron by rolls.

To enable others skilled in the art to make our new article ofmanufacture, we will proceed to describe its construction.

In the accompanying drawings, which form part of our specification,Figure l is a front or face view of our improvement in strapbolts. Fig.2 is a side or edge View of the same. Fig. 3 is a transverse section atline g of Fig. l. Fig. 4 is a transverse of the bolt when cut throughatline h of Fig. 1.

After the iron has been given the desired forni in the rolls, it is thenout to the desired length, and the round part, A, is provided withscrew-threads C, screw-nut B, and in the parts marked D and K are madesuitable openings (marked 1, 2, and 3) for screws or nails.

The strap portion of the bolt is made heavy and strong at and near theopening marked 1, for the reason that this part of the strap-bolt issubjected to the greatest amount of force and strain by the Weight ofthe load in the wagon acting or pressing against the sides of thewagon-bed; for be it observed that when the wagon-bed is loaded theupper part of the bed is very liable to be spread, and theresult is, aheavy strain is brought against or on the strap-bolts at or near thepoint indicated by the lines marked g in Figs.- l and 2.

The advantages of our improvementin stra-pbolts for wagon-beds are to befound, rst, in the form or shape of the article, resulting partly fromthe use of round iron in the preparation of the blanks described in ourpatent of October 6, 1868, the shape being such that the metal isproperly proportioned at different points to the strain to which it isliable, and suoli, also, that the screw-threads may be out upon itwithout the labor and expense of previously forging down and roundingthe end, as has heretofore been customary; and, second, in the smoothand nished appearance of the article and the uniformity of size andconfiguration..

Having thus described the nature, construction, and operation of ourimprovement, what we claim as of our invention is- A strap-boltconsisting of a round, flat, and semioval part, as indicated at thepoints marked A, D, and K, as herein described, and for the purpose setforth.

WM. J. LEWIS. HENRY W. OLIVER, JR.

Witnesses:

J AMES J. J oHNsToN, A. C. JOHNSTON.

